<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>认证成功</title>
</head>
<body style="background-color: cornflowerblue">
<div style="width: 480px; height: 312px; position: fixed; left: calc(50% - 240px); top: calc(50% - 160px);">
    <img width="100%" height="100%" src="/success.jpg">
</div>
</body>
</html>